USE OF CORBA IN THE ATLAS PROTOTYPE DAQ

This paper presents the experience of using a CORBA-based communicatio n package for inter-component communication of control and status info rmation in the ATLAS prototype DAQ project. A public domain package, c alled Inter-Language Unification (ILU) has been used to implement CORB A-based communication between DAQ components in a local area network ( LAN) of heterogeneous computers. The selection of the CORBA standard a nd the ILU implementation are judged against the requirements of the D AQ system. An overview of ILU is included. Several components of the D AQ system have been designed and implemented using CORBA/ILU for which the development procedure and environment are described.